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Finding the Fourth Proportional to 299,973.78, 449,963.10 and 89,613.54

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Solution

The fourth proportional to 299,973.78, 449,963.10 and 89,613.54 is: 134,421.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,973.78 : 449,963.10 = 89,613.54 : x
  2. Step 2: Convert to fraction form
    299,973.78/449,963.10 = 89,613.54/x
  3. Step 3: Cross multiply
    299,973.78x = 449,963.10 × 89,613.54
  4. Step 4: Simplify right side
    299,973.78x = 40,322,786,260.37
  5. Step 5: Solve for x
    x = 40,322,786,260.37/299,973.78
  6. Step 6: Final answer
    x = 134,421.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.